It works randomly in the office which has many sources of interference (with unnecessary amounts of 2.4 Ghz Aps). It seems it doesn't receive any data. See logs below. But when testing at home, it works all the time on both android, iOS apps without giving any failure messages.

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Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. We are the manufacturer of ESP8266EX.